Brown Noise Generator
Brown noise emphasizes lower frequencies for a deeper sound than white noise. This page opens that colour ready to play, with the audio generated locally and no upload or account.
of 25 m
Silent: nothing is playing and no audio node is open. Press play to start brown noise at 18 per cent.
- About 6 dB less energy every octave: the deepest of the three, closer to a waterfall or a distant engine.
- Silent. No audio node exists until you press play.
- 1.5 second buffers are generated and scheduled end to end, so the sound never comes round again.
- Silent, and the tab stops using the audio device.
It starts quiet, and the level is yours. The tool opens at 18 per cent, and the slider follows a perceptual curve, so half way along is a quarter of full output. On headphones, which sit against the ear, start lower than you think you need and come up. Every start is faded in over the time you set and every stop is ramped down, so nothing here begins or ends with a click.
Accuracy. The noise is generated in the browser from a random source, so it never loops and nothing is downloaded. White is equal energy per hertz, pink falls about 3 dB per octave and brown about 6, which is why brown sounds deeper. This is a sound generator: it makes no claim about sleep, concentration, tinnitus or any health effect.
Common questions
- What is brown noise?
- Brown noise has more low-frequency energy than white noise, so it sounds deeper and softer. The generator synthesizes it in your browser rather than streaming a recording.
- Can I use it for sleep or focus?
- Yes. Set a comfortable level, use the fade or timer controls, and stop if the sound is distracting.
The noise is generated in the browser from a random source, so it never loops and nothing is downloaded. White is equal energy per hertz, pink falls about 3 dB per octave and brown about 6, which is why brown sounds deeper. This is a sound generator: it makes no claim about sleep, concentration, tinnitus or any health effect.